In a player review, never ever compare the game with a game you do like.

Don't say : "Gears of war ia a lot of fun, but COD and Halo are just better because of the XP system"

You need to look at the game, and what is new or what is cool and wat is not cool, but you dont need to compare it to another game you do like, you aren't going to win any over if you are LVL7 and you write a bad review with lousy arguments.